SU1435941A1 - Two-coorrdinate inclination angle-data transmitter - Google Patents

Abstract

The invention relates to geodetic instrumentation, in particular, to means for measuring object tilt angles, and makes it possible to increase the reliability of measurements. The device includes a housing 1, inside of which is placed an ampoule 2 in the form of a hollow with side opaque walls of a four-sided pyramid, oriented vertex

Description

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down, along the edges of the pyramid, there is a system of communicating tubes 3, partially filled with an opaque liquid 4. The tubes 3 are filled in the form of optical separation filters with different transmission wavelengths. The luminous flux from the light source 13 enters through the condenser 10 to the ampoule 2. In this case, part of the luminous flux is absorbed by the faces of the 5 ampoules 2 n opaque liquid 4, and part of the luminous flux, the passage through the transparent portions of the tubes 3 and separation filters, enters the condenser 11, where it is collected, focused, and fed to photodetectors 15, 16, 17, 18, with light of a certain wavelength arriving at each photodetector. When the tilt angle of the sensor changes, the level of opaque liquid in the tubes 3 redistributes, which changes the intensity of the light fluxes and leads to a change in the electrical signals on the photodetectors 15, 16, 17, 18. 2 or more

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The invention relates to instrumentation engineering, in particular, to devices for determining the position of objects, and can be used in geodesy, construction, in vehicles, and for working in conditions of increased fire and explosion hazard.

The aim of the invention is to increase reliability.

FIG. 1 shows a general diagram of the sensor in FIG. 2 - section A-A in FIG. 1.

The sensor includes a housing 1, inside of which a measuring unit is placed in the form of an ampoule 2, made in the form of a hollow four-sided pyramid with its top facing downwards, along the edges of which there is a system of connecting tubes 3 partially fixed with opaque liquid 4, and the lateral faces 5 of the pyramid are made opaque, the surfaces of the vessels located on the side edges of ampoule-2 are made in the form of optical separation filters 6–9 with different transmission wavelengths. The ampoules 2 are placed on both sides of the first and second condensers 10 and 11, one of which is optically connected via the first LED 12 to the source 13 of the light, and the other through the second light guide 14 to the photoreceivers 15-18 electrically connected to the recorder 19. Before Photoreceivers 15-17 are installed frequency-selective filters 20-22, matched with three of the optical

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separation filters 6-9. Items 11, 14-22 constitute the processing unit.

The device works as follows.

The light flux from the light source 13 enters through the light guide 12 in to the condenser 10, which forms a parallel beam of light that hits the ampoule 2. A part of the light flux is absorbed by opaque faces 5 ampoules and an opaque liquid 4, and a part of the light flux passes through transparent portions of communicating vessels 3 and falls on the condenser 11. Since the vessels located on the side edges of the ampoule 2, made in the form of optical separation filters 6-9, transmitting light only a certain wavelength, for example filter 6 prop bounces light with a wavelength of -D, and the others reflect, filter 7 - A, filter 8 - A, filter 9 - X4 condenser 11 receive a luminous flux consisting of light with wavelengths D, L., A. 4 the intensity of each co1; wavelength absorbing light flux will depend on the area of the light transmitting part of each of the filters 6-9, which depends on the position of the opaque liquid 4 in the vessels of ampoule 2.

With the sensor 11, the luminous flux is collected and focused on the input end of the light guide 14, through which it goes to the photodetectors 15-18. Since in the path of the luminous flux, output 1

For example, a frequency-selective filters 20-22 are placed from the optical fiber 14, which reflect light with a specific wavelength, and with others they pass only light of a certain wavelength to each photodetector. For example, frequency-selective filter 20 reflects light with a wavelength., , and light with wavelengths h, Л А 4 passes, filter 21 reflects light with a wavelength, ac wavelengths Ai ,, Л4 transmits, filter 22 reflects light with a wavelength D, and transmits light. Thus, the light only with a wavelength A / D ,, will be transmitted to the photodetector 15, to the photodetector 16 — only A, etc. In the vertical position of the sensor, the opaque liquid 4 uniformly fills all the joint vessels 3 and, as a result, the areas of the light-transmitting parts of the filters 6-9 will be equal, and the photoreceivers 15-18 will produce the same signals. When the angle of inclination of the sensor changes, the level of the opaque liquid in the vessels 3 , which will result in a change in the intensity of the light flux passing through the filters 6-9, due to a change in their light transmission area. This will change the electrical signals generated by each photodetector; 5-18.

Information about the magnitude of the angle of inclination and the direction of inclination is obtained as a result of a comparatively comprehensive assessment of electrical signals carried out by the recorder 19,

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The sensor solves the problem of remotely measuring the angle of inclination and the direction of the angle of inclination in an arbitrary direction to the sensor body. The lack of electrical communication of the sensor by transmitting information and supplying T1eni via optical communication lines makes it possible to use it in cases when it is necessary to provide fire and explosion hazards.

Claims (1)

Invention Formula 5 Two-axis inclinable angle sensor containing an opaque body, a measuring unit partially in contact with the working fluid, and a processing unit are distinguished by the fact that, in order to increase reliability, the measuring unit is made in the form of communicating tubes located along the edges of the four-sided isosceles pyramid with non-transparent lateral faces, with their vertices facing downwards, the introduced light source, the first light and the first condenser, the working fluid on an opaque and placed inside tubes located on the lateral edges of the pyramid and formed in a different frequency dividing filters and the processing unit is designed as a measuring unit disposed at a second condenser, a second optical fiber, four-stage frequency-selective filter with appropriate photodetectors coordinated with razdelitelnysh filt35 40 ramie and registrar. FIG. 2